https://bugs.freedesktop.org/show_bug.cgi?id=110822
--- Comment #3 from Gobinda Joy gobinda.joy@gmail.com --- Thanks for the reply.
By today's standard my whole system spec is slow to be honest.
But slow ram speed shouldn't cause this problems with powerplay. As I can run the card fine with load or idle with kernel version 5.0.17. It seems to me the new commits from AMD for kernel version 5.1 is to blame. But I can't say for certain.
Interestingly enough if I use amdgpu.dpm=0 to disable dynamic power management kernel version up to 5.1.6 works just fine except crappy performance when under graphics load.
I was curious so checked out the commit log on amd-staging-drm-next branch. And I see some reverts of powerplay related commits.
Link: https://cgit.freedesktop.org/~agd5f/linux/log/?h=amd-staging-drm-next
I am currently waiting for this to getting merged with master branch.